August weather forecast
Sumner, NE

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Weather in August

The last month of the summer, August, is another hot month in Sumner, Nebraska, with an average temperature fluctuating between 62.6°F (17°C) and 86.2°F (30.1°C).

Temperature

August's beginning signals an average high-temperature of a still tropical 86.2°F (30.1°C), barely different from July's 88.3°F (31.3°C). Sumner registers a marked temperature plunge to an enjoyable 62.6°F (17°C) during the cool August nights.

Heat index

August's average heat index is calculated to be a tropical 93.2°F (34°C). Take more preventive steps, risk of heat exhaustion and heat cramps is elevated. Long activity may culminate in heatstroke.
Heat index data is primarily for areas with shade and subjected to light winds. The heat index may experience an enhancement of 15 Fahrenheit (8 Celsius) degrees under direct sunlight.
Note: The heat index, also known as 'feels like' or 'apparent temperature', is a numerical representation of warmth when taking temperature and moisture levels into account. An individual's temperature experience can be influenced by extra factors, including metabolic differences, activity levels, and clothing. Direct sunlight exposure should be noted as it has the potential to increase the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for children. Kids frequently ignore the importance of taking a break and rehydrating. Thirst is a late symptom of dehydration - thus, it is crucial to stay hydrated, especially during long-lasting physical activities.

Humidity

In Sumner, the average relative humidity in August is 64%.

Rainfall

In Sumner, during August, the rain falls for 13.8 days and regularly aggregates up to 1.89" (48mm) of precipitation. In Sumner, during the entire year, the rain falls for 117 days and collects up to 18.35" (466mm) of precipitation.

Snowfall

June through September are months without snowfall.

Daylight

The average length of the day in August is 13h and 46min.
On the first day of August, sunrise is at 6:34 am and sunset at 8:53 pm. On the last day of the month, sunrise is at 7:04 am and sunset at 8:11 pm CDT.

Sunshine

In August, the average sunshine is 10.4h.

UV index

The months with the highest UV index are June through August, with an average maximum UV index of 6. A UV Index reading of 6 to 7 represents a high health risk from exposure to the Sun's UV radiation for the average person.
Note: The average daily UV index of 6 in August transforms into the following instructions:
Shield from overexposure. Defense against sun-related harm is required. The Sun's UV radiation is at its strongest between the hours of 10 a.m. and 4 p.m. Minimize direct exposure to the sun during this period. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears.
Updated: Aug 27, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How hot is August?

The high-temperature in Sumner during August is 86.2°F (30.1°C) and the low-temperature is 62.6°F (17°C). The average heat index (a.k.a. 'feels like', 'real feel'), which calculates the temperature value influenced by the moisture in the air, in August is calculated to be 93.2°F (34°C).

What is the average humidity in August?

In August, the average relative humidity is 64%.

How many days does it rain in August?

In Sumner, during August, the rain falls for 13.8 days and regularly aggregates up to 1.89" (48mm) of precipitation.

When it does not snow?

In Sumner, snow does not fall in June through September.

What is the average length of the day in August?

In Sumner, the average day length in August is 13h and 46min.

When are sunrise and sunset in August?

On the first day of August, sunrise is at 6:34 am and sunset at 8:53 pm. On the last day of the month, sunrise is at 7:04 am and sunset at 8:11 pm CDT.

How many hours of sunshine does Sumner have in August?

In Sumner, the average sunshine duration in August is 10.4h.

What is the month with the highest UV index?

The months with the highest UV index are June through August, with an average maximum UV index of 6.

What is the UV index intensity in August?

In Sumner, the average daily maximum UV index in August is 6. A UV Index value of 6 to 7 symbolizes a high health vulnerability from unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in August
Sumner, NE

Average temperature in August - Sumner, NE
  • Average high temperature in August: 86.2°F

The warmest month (with the highest average high temperature) is July (88.3°F).
The month with the lowest average high temperature is January (35.8°F).

  • Average low temperature in August: 62.6°F

The month with the highest average low temperature is July (65.5°F).
The coldest month (with the lowest average low temperature) is January (21°F).

Average pressure in August
Sumner, NE

Average pressure in August - Sumner, NE
  • Average pressure in August: 29.93"Hg

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.84"Hg).

Average wind speed in August
Sumner, NE

Average wind speed in August - Sumner, NE
  • Average wind speed in August: 8.9mph

The windiest month (with the highest average wind speed) is April (11.9mph).
The calmest month (with the lowest average wind speed) is July (8.8mph).

Average humidity in August
Sumner, NE

Average humidity in August - Sumner, NE
  • Average humidity in August: 64%

The month with the highest relative humidity is January (75%).
The month with the lowest relative humidity is October (58%).

Average rainfall in August
Sumner, NE

Average rainfall in August - Sumner, NE
  • Average rainfall in August: 1.89"

The wettest month (with the highest rainfall) is May (3.03").
The driest month (with the least rainfall) is January (0.51").

Average rainfall days in August
Sumner, NE

Average rainfall days in August - Sumner, NE
  • Average rainfall days in August: 13.8 days

The month with the highest number of rainy days is May (16.8 days).
The month with the least rainy days is February (3.9 days).

Average snowfall in August
Sumner, NE

Average snowfall in August - Sumner, NE
  • Average snowfall in August: 0"

The month with the highest snowfall is February (3.62").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in August
Sumner, NE

Average snowfall days in August - Sumner, NE
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is January (7.6 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in August /
Average sunshine in August
Sumner, NE

Average daylight in August / Average sunshine in August - Sumner, NE
  • Average daylight in August: 13h and 5min

The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).

  • Average sunshine in August: 10h and 2min

The month with the most sunshine is July (Average sunshine: 11h and 6min).
The month with the least sunshine is January (Average sunshine: 5h and 54min).

Average sunshine days in August
Sumner, NE

Average sunshine days in August - Sumner, NE
  • Average sunshine days in August: 14.6 days

The month with the most sunshine days is November (22.5 days).
The month with the least sunshine days is June (11.2 days).

Average UV index in August
Sumner, NE

Average UV index in August - Sumner, NE
  • Average UV index in August: 6

The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).

Average cloud cover in August
Sumner, NE

Average cloud cover in August - Sumner, NE
  • Average cloud cover in August: 24

The month with the most cloud cover is February (Cloud cover 38).
The month with the least cloud cover is September (Cloud cover 22).

Average visibility in August
Sumner, NE

Average visibility in August - Sumner, NE
  • Average visibility in August: 6mi

The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).

Sumner, Nebraska, USA

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